AD8232 Heart Rate Monitor Plot ECG to Arduino Serial Plotter

/*
Here's code for the AD8232 Heart Rate Monitor Kit that sends ECG data to the Serial Plotter:

After uploading the code to your Arduino board, open the Serial Plotter from the Arduino IDE by going to "Tools" > "Serial Plotter". You'll see the ECG graph in real-time. Adjust the delay in the loop() function to change the sampling rate.

Note that the Serial Plotter in the Arduino IDE is a basic tool for visualizing data. If you need more advanced features or want to store the ECG data for further analysis, consider using a more powerful plotting software like Processing or sending the data to a web server and plotting it using JavaScript libraries like Chart.js or Plotly.js.
*/

// Define the pin connections
const int AD8232_LO_PLUS = 2;
const int AD8232_LO_MINUS = 3;
const int AD8232_OUTPUT = A0;

void setup() {
  Serial.begin(9600);
  pinMode(AD8232_LO_PLUS, INPUT);
  pinMode(AD8232_LO_MINUS, INPUT);
  pinMode(AD8232_OUTPUT, INPUT);
}

void loop() {
  int LO_plus = digitalRead(AD8232_LO_PLUS);
  int LO_minus = digitalRead(AD8232_LO_MINUS);

  if (LO_plus == 1 || LO_minus == 1) {
    Serial.println("Leads Off");
  } else {
    int output = analogRead(AD8232_OUTPUT);
    Serial.println(output);
  }

  delay(5); // Adjust the delay for different sampling rates
}